The Kconfig symbols SYS_ARCH, SYS_CPU, SYS_SOC, SYS_VENDOR and
SYS_BOARD are defined in arch/Kconfig as having type string, and most
board files simply amend those definition with suitable

  default "foo"

or

  default "foo" if BAR

stanzas. But some also include a redundant repetition of the type.

Homogenize the code base by removing those lines.

Generated by

  find arch/*/ board -name Kconfig | xargs perl -i -g -pe 's/(config SYS_(ARCH|CPU|SOC|VENDOR|BOARD)\n)\s*string\n/\1/gs'

with the trailing slash in arch/*/ ensuring that arch/Kconfig itself
is not found.

This does not change boards which add a prompt string, e.g.

  string "Board name"

because I think those change the semantics of the symbol into being
user-settable.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Tom Rini <trini@konsulko.com>

Generally speaking, we do not prompt for this value and define it in the
board specific Kconfig file. There are some valid use cases however
today where we do prompt for this value, so instead of having this be
done in a number of locations, do this at the top-level location only.

This removes the question from a number of other locations and makes it
consistent that when we do set the value directly, we always do it the
same way. We don't need to specify the type, it's always string.

Signed-off-by: Tom Rini <trini@konsulko.com>

Add Sysam Amcore m68k-based board support.

Signed-off-by: Angelo Dureghello <angelo@sysam.it>